That's absolutely terrible that the supposed father doesn't want to have anything to do with a child that is still very much his. The child has only know him as a father and the child is still part of his and his lady's life. Such a shame.

I hope that this will be a great opportunity for you too. I'm sorry you feel uncomfortable with your fiance having had a child with another woman and I hope you don't continue to feel that way for too long.